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Manufacturer-sourced values side by side. No performance equivalence or ranking is applied across different machine classes.

FeatureCaterpillar 311D LRRExcavatorCaterpillar 312B LExcavator
Excavator TypeMid-Size ExcavatorMid-Size Excavator
Weight12474 kg12705 kg
Horsepower60 kW63 kW
Digging Depth506 cm515 cm
Max Digging Depth506 cm515 cm
Max Loading Height545.6 cm588.3 cm
Max Reach Along Ground810.8 cm780.3 cm
Max Vertical Wall Digging Depth448.1 cm445.0 cm
Overall Length691.9 cm762.0 cm
Track Length3352.8 cm3657.6 cm
Length of Track on Ground280.4 cm304.8 cm
Reference Bucket Capacity0.5 m20.5 m2
Max Bucket Capacity0.8 m20.8 m2
Min Bucket Capacity0.3 m20.4 m2
Ground Clearance45.7 cm45.7 cm
Tail Swing Radius176.8 cm213.4 cm
Overall Width259.1 cm249.9 cm
Engine MakeCaterpillarCaterpillar
Engine ModelC4.2 ACERT3064 T Diesel Engine
Net Power60 kW63 kW
Gross Power64 kw68 kw
Hydraulic Pump Flow Capacity117 LPM238 LPM
Hydraulic System Capacity145.4 l162.0 l
Relief Valve Pressure350 Bar343 Bar
Operating Weight12474 kg12705 kg
Max Travel Speed5.1 km5.6 km
Swing Speed11.4 RPM12 RPM
Cab Height277.4 cm277.4 cm
Cooling Capacity18.2 l15.5 l
Fuel Capacity210.1 l250.2 l
Swing Drive Capacity3.0 l3.0 l
Engine Oil Capacity19.3 l13.2 l
Ground Pressure34.5 kPa38.6 kPa
Stroke13.0 cm13.2 cm
Bore10.2 cm10.4 cm
Displacement4244.2 cc4244.2 cc
Shoe Size60.2 cm50.0 cm
Max Cutting Height780.3 cm826.0 cm
Track Gauge201.2 cm201.2 cm
Removal Counterweight Clearance91.4 cm94.5 cm
Drawbar Pull11.612 kg10.401 kg
Rated Power—1900 RPM
Aspiration—Turbocharged
Operating Voltage—Operating Voltage 24 V
Alternator—50 A
Sourceheavyequipments.net archive (imported 2026-10)heavyequipments.net archive (imported 2026-10)
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Side-by-side specification comparisons generated from the manufacturer-sourced model files. · 7,051